Loom-beam attachment.



Patented Nov. 20, I900. C. R. SAATWEBER.

LDUM BEAM ATTACHMENT.

(Application filed Oct. 7, ISQQJ (No Model.)

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WITNESSES:

ATTORNEY.

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Unite STATES ATENT FFicit.

CHARLES R. SAATWEBER, OF PATERSON, NEW JERSEY, ASSIGNOR OF ONE- HALF TO GEORGE W. RENKEL, OF SAME PLACE.

LOOM-BEAM ATTACHM ENT.

$?ECIFICATION forming part of Letters Patent No. 662, dated November 1900- Application filed October '7, 1899. Serial No. 732,912- (No model.)

To (all whom it may concern:

Be it known that 1, CHARLES R. SAATWEBER,

a citizen of the United States, residing at 36 Barbou rstreet,Paterson, in the county of Pas- 5 saic and State of New Jersey, haveinvented a new and usefullm provement in Loom-Beam Attachments, of which the followingis a specification.

My invention relates to improvements in to loom-heams in which the tension is self-regulating and the slack warp when drawn back is automatically taken up on the beam and the tension on the warp is always uniform.

The objects of my improvements are, first, to provide a uniform tension on the beam and with a less weight than now used; second, to counteract the sudden slips of the tension when the warp is being drawn off; third, to wind back on the beam automatically the 20 warp when it is found necessary to draw back the warp and to keep all the slack out of the warp; fourth, to keep the same tension on the warp when it is drawn back when the warp is being drawn off, and, fifth, to keep the warp 2 continually and uniformly unwinding as the goods are woven. I attain these objects by the mechanism illustrated in the accompanying drawings, in which Figure 1 is aside elevation of my invention 0 attached to a loom. Fig. 2 is the same as Fig. 1, except that the ten sion-frame is shown at its lowest point; Fig. 3, a front view of Fig. 2. Fig. 4 is a detail view of the tensioni'rame with the roller and weights on it. Fig. 5 is a detailed view of a cam with the bands attached, and Fig. 6 is a front view of Fig. 5.

Similar characters refer to similar parts throughout the several views.

The warp-beam, the flanges of which are represented by a and the barrel on which the warp is wound by Z, is supported in the journals it by the uprights Z). The tension frame of, as shown in Fig. 4, is also supported in the uprights l) by the rod 25. (See Figs. 1 and 2.) In the hole j a spring i is fastened,

and the band 1) passes from the spring over the groove in the flange a and the other end is fastened in the hole 2 in the frame (Z. The distance from the supporting-rod t to the hole 50 is less than from 15 to The purpose of this will be shown later.

Below the tension-bracket d, held in place by the same uprights, are two cams 0, one on each side of the frame, a detail of which is shown in Figs. 5 and 6. These cams have a hub or cylindrical piece 9 on one side with a groove 4 in the same, in which is fastened and over which is wrapped a band 0, connected to the one end of the spring'lo, and the other end of the spring is secured by a screw-eye to the uprights 1). Around the outside or face of the cam c is fastened and wrapped for a distance the strap or band f, the other end of which is fastened to the tension'frame in the hole 2 or 3, if desired.

In the frame d, which is about the width of the beam, is a roller 6, which turns as the Warp u is drawn from the beam 1 and passes around the roller and then through the loom. The weight m rests in the slots r in the end of the frame (Z, and the slots are so cut that when the frame is at its highest position, as shown in Fig. 1, the slots will slope inward, so that the weight will slide to a position nearer the center of the frame. The level is shown by line 00. The distance the frame d can be raised and lowered is limited by the pin '1) for the highest point and w for the lowest. Both pins are secured to uprights b. When the frame 61 rests against the pin 1;, the tension is at its normal orit may be its lowest point. The tension at this point. is through the slipping of the band 19, which is wrapped around the head a of the beam. The trouble experienced with the old-style tension is that, the beam will remain still at times for several picks of the loom, thus increasing the strain on the silk, sometimes to the breaking-point, and at other times remaining still, as stated heretofore, and then giving a sudden slip more than needed, causing a slack and a consequent bad place woven in the goods, and it is necessary for the weaver to pass around back of the loom and turn the beam back by hand, if necessary to take up any slack or to draw the warp back. The warp it should move uniformly with every pitch of the loom and have a uniform tension. If the warp should be drawn back, as is often necessary, the frame d would be lowered possibly as far as the pin to will permit and the warp will be taken up, some of it by the lowered position of the roller 6 and part on the beam 0,. When the warp is being drawn from the beam, the upper side of the flange of the beam turns to theleft. The frictional contact between the band and the flange has the tendency to draw the roller end of the bracket (1 to its highest pointagainst the pin 1). When in this position, the spring 2' is under its least tension and the band 1) would then press most lightly on the flange. This is caused by the distance from s to .2 being greater than from s to j. The spring 21 is necessary, as the band 19 would otherwise probably break in case the bracket (Z were drawn to the position shown in Fig. 2, and as the are passed over by z is longer than that passed over byj this would tend to increase the tension on the flange of the beam. It will be noticed in Fig. 1 that the weight on is at its nearest point to the pivot 15, and hence exerting its least pull on the lever-bracket d. From the aforesaid highest point, if the end of the bracket d on which the weight is is lowered in any way, by releasing any of the warp from the beam a or by drawing back the warp the tension immediately increases on the beam by the sliding of the weight on to the other end of the slot r, as shown later. When the bracket d lowers, the band 1) is tightened and the springi extended, which requires a heavier pull to be made on the warp to cause the band to slip over the flange a. When the weighted end of the bracketis caused to lower a certain distance, the slot 1' slopes the reverse way. The weight m then slides to the farthestend of the slot r, increasing the distance from the weight m to the fulcrum t, and thus increasing the tension on the band 19. When the weight end of the bracket lowers, the band f, connected to 2, permits the cams to turn on the rod h, and in so doing the band f at its last point of contact is nearer the rod it than before. This would cause a slight increase of pull on the bandfif the pull by the spring 10 on the band 0 remained the same; but as the spring contracts and exerts a less pull on the band 0 by the unwinding of the said band on the hub g at the same time the one somewhat equalizes the other and the pull on the band fremains nearly the same. When the warp is being woven or unwound, the bracket 61 is adjusted to a position about horizontal by applying the necessary weights in the slots 1". With the proper tension now on the warp that tension remains the same, although the bracket raises and lowers, as the warp may unwind irregularly from the beam, at times slipping and sometimes catching. Thus I can get a regular and uniform tension from an irregular unwinding beam. In drawing back the warp the roller 6 and the bracket d draws the band 19 and by its friction on the flange a turns the warp-beam, and thus winds up some of the Warp.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is

1. In a self-regulating warp-beam attachment the combination of a warp-bea m having grooved flanges a and a pivoted tensionbracket containing a roller, the band 1:) the spring 2' connected to the said bracket at z andj respectively, the sloping slots 7' in the bracket d, and the weights m left free and movable in the slots 7', as and for the purpose set forth.

2. In a warp-beam attachment, the tensionbracket having the sloping slots 1' and weights movable in the same, and the connectingpoints z andj of the band and spring 1 said points located to move in unequal arcs, the cam c with the spring and the band 0 acting on its hub, and the band fconnected to its periphery and to the bracket d as set forth and described.

3. In a warp beam attachment, having grooved flanges a, the combination of a warpbeam, a pivoted tension bracket having a band operating in said flanges, the slots 1' in the bracket d, the movable weights in the slots and the cam o with the band f and its hub with its hand 0 and spring 70 as set forth and described.

Signed at Paterson, in the county of Passaic and State of New Jersey, this lth day of ()ctober, A. D. 1899.

OHS. R. SAATWEBER.

Witnesses:

J. O. HOUSTON, S. I. TILT. 

